SleepSoul Space Memory Pocket 3000 Boxtop Double Mattress in a Box
The SleepSoul Space Memory Pocket 3000 Boxtop is a 36cm deep hybrid mattress that arrives vacuum sealed in a box, combining 1000 pocket springs with 2000 mini springs beneath layers of memory foam and a cashmere knitted top.
- Support that adjusts to your shape
- Eases pressure at hips & shoulders
- 10-year guarantee
£418.90
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SleepSoul Space Memory Pocket 3000 Boxtop Mattress in a Box
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Mattress details
Mattress
SleepSoul Space Memory Pocket 3000 Boxtop Mattress in a Box
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
36
Layers
5
Layer Details
Cashmere knitted top fabric
A cashmere knitted cover that feels soft and slightly luxurious from the moment you lie down. It is breathable too, which helps if you tend to run warm at night.
High-density foam
A 3cm layer of high-density foam that gives a responsive surface, which means the mattress adjusts as you move rather than leaving you stuck in one spot.
Memory foam
3cm of memory foam that contours to your body and eases pressure points. This is the layer side sleepers will notice most around the hips and shoulders.
Soft foam
A 2cm layer of softer foam adding extra cushioning between the comfort layers and the springs. It helps balance the firmer support below with a gentler surface feel.
Pocket springs and mini springs
1000 pocket springs provide targeted support across the mattress, with 2000 mini springs working alongside them. Because each spring moves independently, you get support where your body needs it and less disturbance from a partner's movement.
Layer details from sleepsoul.co.uk product page, September 2026.
Key benefits
- Sized for a typical bedroom: At 135 x 190cm, or 4ft 6in x 6ft 3in, it leaves floor space for a wardrobe and drawers where a UK king would start to crowd the room.
- Less disturbance at close quarters: With 67.5cm each you sleep nearer your partner, so the independently moving pocket springs help by limiting how far one person turning over travels across the bed.
- Ready for guests: A visiting couple gets a proper shared bed with a medium feel, which should suit most back and side sleepers without anyone finding it too firm or too soft.
- Simple duvet, deeper sheets: A 200 x 200cm double duvet is easy to find, although the 36cm depth means you'll need deep fitted double sheets rather than standard ones.
This size suits you if...
You share with a partner in a bedroom of around 2.6m x 2.8m or a little larger, you're setting up a spare room for couples who stay over, or you sleep alone with a dog or cat who likes to claim a corner.
Consider another size if...
One of you sprawls, or you're both tall and 67.5cm each already feels tight. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
How much space does each person get on the SleepSoul Space Memory Pocket 3000 UK double?
Two people sharing get 67.5cm each across the 135cm width. That suits most couples, although if you both like to spread out you may prefer the UK king, which gives 75cm each.
Will a UK double SleepSoul Space Memory Pocket 3000 fit with bedside tables on both sides?
We suggest a room of at least 2.6m x 2.8m for a UK double. Around 3m x 3m is more comfortable if you want a bedside table on each side and space to walk round the bed without squeezing past furniture.
What fitted sheets fit a 36cm deep UK double mattress?
Look for deep fitted double sheets, as standard ones are unlikely to stretch over a 36cm depth. On top, a 200 x 200cm double duvet gives enough overhang for two people.
How much bigger is the SleepSoul Space Memory Pocket 3000 UK king than the UK double?
The UK double is 15cm narrower and 10cm shorter than the UK king, which works out as 7.5cm less each for two sharing. The UK king needs a larger room too: we suggest at least 2.7m x 2.9m.
Is there a smaller size than the UK double in the SleepSoul Space Memory Pocket 3000?
No. SleepSoul makes this mattress in a UK double, UK king and UK super king only, so the UK double is the most compact option. If your room needs a UK single or UK small double, you'll have to look at a different mattress.